Wireless AP as Client problem

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garvani

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#56516 14-Jan-2010 21:37

Ok so im tearing my hair out here and im about to break something

....

Hopefully some brightspark in here might have a clue whats going on! im a computer tech by trade and this has me stumped.

Ive got two machines, one windows 7 directly connected to the router.. 2nd pc is a XP machine connected to a Dlink 2100ap which is set as a client. Router is a 3com officeconnect.
The xp machine gets an IP off the router through the AP, it can browse the net fine. I can ping the router and AP, login to both as well.

From the 7 machine i can log in to the router fine. Cant ping the AP and cant ping the xp machine. There are no firewalls and no AV enabled on either machine.

If i swap the connections over so the 7 machine has the AP and the xp is hard wired in, from the 7 machine i can ping the xp machine which is freshly loaded, only things on here are drivers, all windows updates and media portal and its sql servers etc.. no firewall or anything has touched this machine, xp firewall is off too) What the heck is going on!

Ive reset router and AP to factory defaults..
I thought my dlink maybe faulty as it was a year old so i tried a brand new 2100AP.. Excatly the same problem.
Turned off all firewall features on the 3com.
Looked through the AP settings for anything that could explain this.. No vlans or anything enabled.

Ok so xp machine aside.. I should be able to ping the AP, if i cant ping the ap chances are i wouldnt be able to ping the XP machine. The kicker is, that the XP machine can surf the net etc through the AP, so its on the network.

Thoughts? Ideas? Anything?! lol

nitrotech

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#290124 14-Jan-2010 21:51

What IP addresses does it give from the DHCP server to each of the client PC's and is this different when you 'switch them over' - eg find out from right clicking on the network connection and goto status, what's the IP, subnet mask, gateway and DNS?

Sounds to me like you may have 2 DHCP servers running on the network, also check that the router is just into a normal network port on our dlink, some wireless routers have a special ADSL or Router network port however these are often firewalled and only one way communication is allowed.

garvani

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#290152 14-Jan-2010 23:28

Cheers for the reply.. I have them static assigned at the moment.. They are on the same network, 192.168.1.1 router, 192.168.1.50 is AP, 192.168.1.51 is XP, 192.168.1.52 is 7. Subnet mask of 255.255.255.0, gateway 192.168.1.1
There is only one dhcp server and that is on the router. The dlink is an Access Point, which means it only has one port on it, it has a dhcp server but its disabled.
There is some strange connection issue but ill be damned if i can figure it out..

Ragnor

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#290290 15-Jan-2010 12:42

Are you sure the AP isn't configured to drop/not reply to ICMP?

What does start > run > cmd : "arp -a" (without quotes) show on each machine?

garvani

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#290806 18-Jan-2010 09:24

Ragnor: Are you sure the AP isn't configured to drop/not reply to ICMP?

What does start > run > cmd : "arp -a" (without quotes) show on each machine?

Will try this later.. The thing is i cant ping past the AP to the client machine, i cant login to the AP. And more importantly i cant rdp into the client (which is what i need to do). So its not a matter of it dropping the ping, theres something strange happening.. Ill be having another go at it tonight.

garvani

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#291081 19-Jan-2010 08:57

Just thought id let you know that its sorted. Well i found a workaround. Its a problem with the AP by the looks of it. After talking to a workmate he realised he had seen the problem before. I switched the AP from Client to Universal Repeater, now i can ping both and rdp into my xp machine.. Which allowed me to setup my mediaportal machine that is in the lounge from my bedroom, lol.
Now onto my next problem, mediaportal client freezing when i try and watch live tv on my 7 machine streamed from my backend xp machine.. but thats for a different thread.

Ragnor

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#291265 19-Jan-2010 18:15

Good hear, everyone loves a happy ending!